/* Calm, academic, greyscale. Serif for reading, sans for controls and data. */
:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --surface: #f6f6f5;
  --text: #1a1a1a;
  --muted: #6a6a6a;
  --line: #e2e2e0;
  --line-strong: #bdbdbb;
  --ink: #111111;
  --on-ink: #ffffff;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Noto Serif", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --width: 64rem;
  --gutter: clamp(1rem, 4vw, 2rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --surface: #1b1b1b;
    --text: #e6e6e4;
    --muted: #9b9b99;
    --line: #2c2c2c;
    --line-strong: #4a4a4a;
    --ink: #f0f0ee;
    --on-ink: #121212;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 1rem/1.6 var(--sans);
}

main {
  flex: 1;
  width: 100%;
  max-width: var(--width);
  margin: 0 auto;
  padding: clamp(1.5rem, 5vw, 3rem) var(--gutter);
}

h1 {
  margin: 0 0 .5rem;
  font: 400 clamp(1.6rem, 5vw, 2.1rem)/1.2 var(--serif);
  letter-spacing: -.01em;
}

p { margin: 0 0 1rem; }
a { color: inherit; text-underline-offset: .2em; text-decoration-thickness: 1px; }
strong { font-weight: 600; }

:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

.muted { color: var(--muted); }

.eyebrow {
  margin: 0 0 .75rem;
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Icons */
.icon {
  width: 1.25em;
  height: 1.25em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: -.25em;
}

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  max-width: var(--width);
  margin: 0 auto;
  padding: .75rem var(--gutter);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-width: 0;
  font: 400 1.05rem/1 var(--serif);
  text-decoration: none;
}
.brand .icon { width: 1.5rem; height: 1.5rem; }
.brand span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.account { display: flex; align-items: center; gap: .25rem; min-width: 0; }
.account form { display: flex; margin: 0; }

.who {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-width: 0;
  margin-right: .5rem;
  font-size: .9rem;
}
.who-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 14rem; }

.avatar {
  display: inline-grid;
  place-items: center;
  flex: none;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--surface);
  color: var(--muted);
  object-fit: cover;
  /* Photos sit quietly in the greyscale page and regain colour on hover. */
  filter: grayscale(1);
  transition: filter .2s;
}
.avatar:hover { filter: none; }
.avatar .icon { width: 1rem; height: 1rem; }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: none;
  color: var(--muted);
  cursor: pointer;
  text-decoration: none;
}
.icon-btn:hover { background: var(--surface); color: var(--text); }
.icon-btn[aria-disabled="true"] { opacity: .35; pointer-events: none; }

/* Buttons and fields */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 2.5rem;
  padding: .45rem 1rem;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: var(--ink);
  color: var(--on-ink);
  font: 500 .9rem/1.2 var(--sans);
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { opacity: .85; }
.btn-quiet { border-color: transparent; background: none; color: var(--muted); }
.btn-quiet:hover { color: var(--text); opacity: 1; }
.btn-small { min-height: 2rem; padding: .25rem .6rem; font-size: .8rem; }

/* Google's own mark and colours, as its sign-in branding requires. */
.btn.google { border-color: #747775; background: #fff; color: #1f1f1f; }
.btn.google svg { width: 18px; height: 18px; }

.field {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 2.5rem;
  padding: 0 .75rem;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: var(--bg);
  color: var(--muted);
}
.field:focus-within { border-color: var(--ink); }
.field input, .field select {
  flex: 1;
  min-width: 0;
  height: 2.4rem;
  border: 0;
  outline: 0;
  background: none;
  color: var(--text);
  font: inherit;
  font-size: 1rem; /* 16px keeps iOS from zooming in on focus */
}

.status {
  display: flex;
  align-items: flex-start;
  gap: .5rem;
  margin: 1rem 0;
  padding: .6rem .8rem;
  border-left: 2px solid var(--ink);
  background: var(--surface);
  font-size: .9rem;
  text-align: left;
}
.status .icon { margin-top: .12em; }
[hidden] { display: none !important; }

/* Text pages */
.prose { max-width: 38rem; font: 1.08rem/1.7 var(--serif); }

/* Tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.tile {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  min-height: 9rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  text-decoration: none;
  transition: border-color .12s, background .12s;
}
.tile:hover { border-color: var(--ink); background: var(--surface); }
.tile-icon { width: 2rem; height: 2rem; margin-bottom: auto; color: var(--muted); stroke-width: 1.25; }
.tile:hover .tile-icon { color: var(--text); }
.tile-title { margin-top: 1rem; font: 400 1.25rem/1.25 var(--serif); }
.tile-sub { display: inline-flex; align-items: center; gap: .35rem; color: var(--muted); font-size: .85rem; }
.tile-sub .icon { width: 1rem; height: 1rem; }

/* Sign-in and "no access" */
body.bare main { display: grid; place-items: center; }
.notice { width: 100%; max-width: 26rem; text-align: center; }
.notice p { color: var(--muted); }
.notice strong { color: var(--text); overflow-wrap: anywhere; }
.notice-icon { width: 2.5rem; height: 2.5rem; margin-bottom: 1rem; color: var(--muted); stroke-width: 1.25; }
.actions { margin: 1.75rem 0 0; }

/* Settings */
.settings { display: grid; grid-template-columns: 12rem minmax(0, 1fr); gap: 2.5rem; }

.settings-nav nav { display: flex; flex-direction: column; gap: .125rem; }
.settings-nav a {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .5rem .75rem;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: .95rem;
  text-decoration: none;
}
.settings-nav a:hover { color: var(--text); }
.settings-nav a[aria-current="page"] { border-left-color: var(--ink); background: var(--surface); color: var(--text); }

.section-head { margin-bottom: 1.5rem; }
.section-head p { margin: 0; }

.filters { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; }
.field-search { flex: 1 1 14rem; }

/* Users table */
.users { width: 100%; border-collapse: collapse; font-size: .92rem; }
.users th {
  padding: .6rem .75rem;
  border-bottom: 1px solid var(--line-strong);
  color: var(--muted);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .1em;
  text-align: left;
  text-transform: uppercase;
  white-space: nowrap;
}
.users td { padding: .7rem .75rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
.users th:first-child, .users td:first-child { padding-left: 0; }
.users th:last-child, .users td:last-child { padding-right: 0; }
.users .col-access, .users .cell-access { text-align: right; }

.cell-user { display: flex; align-items: center; gap: .75rem; min-width: 0; }
.cell-user .avatar { width: 2rem; height: 2rem; }
.user-text { display: flex; flex-direction: column; min-width: 0; line-height: 1.35; }
.user-name { font-weight: 500; }
.user-name, .user-email { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-email { font-size: .85rem; }
.cell-date { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }

.toggle { display: inline-flex; align-items: center; gap: .5rem; margin: 0; }

.check { position: relative; display: inline-grid; place-items: center; width: 2.5rem; height: 2.5rem; cursor: pointer; }
.check input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.check-box {
  display: grid;
  place-items: center;
  width: 1.35rem;
  height: 1.35rem;
  border: 1.5px solid var(--line-strong);
  border-radius: 2px;
  color: transparent;
  transition: background .12s, border-color .12s;
}
.check-box .icon { width: 1rem; height: 1rem; stroke-width: 2.25; }
.check:hover .check-box { border-color: var(--ink); }
.check input:checked + .check-box { border-color: var(--ink); background: var(--ink); color: var(--on-ink); }
.check input:focus-visible + .check-box { outline: 2px solid var(--ink); outline-offset: 2px; }
.check input:disabled + .check-box { opacity: .5; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .15rem .5rem;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  color: var(--muted);
  font-size: .78rem;
  white-space: nowrap;
}
.tag .icon { width: 1rem; height: 1rem; }

.empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  margin: 0;
  padding: 3rem 1rem;
  border-block: 1px solid var(--line);
  color: var(--muted);
}
.empty .icon { width: 2rem; height: 2rem; stroke-width: 1.25; }

.table-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.5rem;
  margin-top: .75rem;
  font-size: .88rem;
}
.pager { display: flex; align-items: center; gap: .25rem; }
.pager-pos { min-width: 4.5rem; text-align: center; color: var(--muted); font-variant-numeric: tabular-nums; }

/* Phones: settings menu becomes a tab strip, table rows become cards. */
@media (max-width: 44rem) {
  .who-name { max-width: 9rem; }

  .tiles { grid-template-columns: minmax(0, 1fr); gap: .75rem; }
  .tile { flex-direction: row; flex-wrap: wrap; align-items: center; column-gap: 1rem; min-height: 0; padding: 1rem; }
  .tile-icon { margin: 0; }
  .tile-title { flex: 1; margin: 0; }
  .tile-sub { flex-basis: 100%; padding-left: 3rem; }

  .settings { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .settings-nav .eyebrow { display: none; }
  .settings-nav nav {
    flex-direction: row;
    gap: 0;
    overflow-x: auto;
    border-bottom: 1px solid var(--line);
  }
  .settings-nav a { border-left: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
  .settings-nav a[aria-current="page"] { border-bottom-color: var(--ink); background: none; }

  .filters .field { flex: 1 1 100%; }
  .filters .btn { flex: 1; }

  .users thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .users, .users tbody { display: block; }
  .users tr {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    column-gap: .75rem;
    align-items: center;
    padding: .75rem 0;
    border-bottom: 1px solid var(--line);
  }
  .users tbody tr:first-child { border-top: 1px solid var(--line); }
  .users td { padding: 0; border: 0; }
  .cell-user { grid-column: 1; grid-row: 1; }
  .cell-access { grid-column: 2; grid-row: 1 / span 3; }
  .cell-date { grid-column: 1; padding-left: 2.75rem !important; font-size: .8rem; white-space: normal; }
  .cell-date::before { content: attr(data-label) ": "; }
  .cell-user + .cell-date { margin-top: .35rem; }
}

@media (max-width: 24rem) {
  .who-name { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}